Henry p



Patented Apr. 27 1886.

SPRING HINGE.

(Model.) 7

H. P. KOCHSMEIER &G. M. WALDORF.

.No. 340.790. 7501A J I wj .QVTTZJ 3 W1 TJV ESSEAS' f. 06, W MMKW Wlhvrrnn STATES PAT NT OFFICE.

HENRY P. KOCHSMEIER AND GEORGE M. XVALDORF, OF FREEPORT, ILL.

SPRlNG-HINGE.

GPBCIFECATIQN forming part of Letters Patent No. 340,790, dated April27, 1886,

Application filed March i, 1896. Serial No. 193,744. (Model) To all whomit may concern:

Be it known that we, HENRYP. KooHsMErER and GEORGE M. WALDOR'F, bothresidents of Freeport, in the county of Stephenson and State ofIllinois,have invented certain new and useful Improvements inSpring-Hinges; and we do hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertaius to make and use the same,reference being had to the accompanying drawings, which form a part ofthis specification, and in which-- Figure 1 is a perspective view of ourimproved spring-hinge, showing it attached. Fig.2 is an axial sectionalview of the same. Fig. 3 is a detail view of the spindle with thesprings and buttons; and Fig. 4 is a similar View ofthe spindle, aspring, and one of the buttons.

Similar letters of reference indicate corresponding parts in all thefigures.

Our invention has relation to thatclass of springhinges in which theleaves ofthe hinges are provided with projecting lips pivoted together,and in which two springsupon aseparate spindle, placed between thepivoted lips, have their ends secured to the leaves of the hinge; and itconsists in theimproved construction and combination of parts of thesame, as hereinafter more fully described and claimed.

In theaccompanying drawings, the letters A A indicate the two leaves ofthe hinges, which are formed with the projecting lips or cars B, whichare pivoted together, having pintles O, fitting in perforations D in theopposite ears and turning in the same. The middles of the inner edges ofthe leaves are formed with perforated ears or bails E, bent slightlyoutward from the planes of the leaves.

The spindle F is preferably formed with a narrow flange, G, at itsmiddle, and has two transverse notches, H, at its ends, and two smallstuds, I I, project from the side of the spindle, each stud at adistance from the flange at the middle.

Two sleeves, J J, fit upon the spindle,bearing with their inner endsagainst the central flange, and each sleeve is formed with alongitudinal groove, K, in its bore, which groove may slide over thestud upon the spindle, which stud will bear against the outer end of thesleeve after the sleeve has been slipped upon the spindle and turned soas to bring the groove away from the stud, the stud thus retaining thesleeve upon the spindle. Each of these sleeves is provided at its innerend with a flange, L,which is formed with an outwardlyprojecting lughaving a flatl1ook,M,at its end, which hook projects inward at one end,so as to project over a portion .of the other half of the spindle, andthe flange is provided with a notch, N, in its outer face to the rear ofthe hook.

An annular button, 0, fits upon each end ofthe spindle,and is formedwith an outwardlyprojccting flange at its outer end,which flange islettered P, and this flange has in one side a notch, Q, which extendsinto the central bore of the annular but-ton.

A spiral spring, R, is placed upon each half of the spindle, fittingwith its inner end upon the reduced outer end of the sleeve, and has its'i nner end fitting in the notch in the flange of the sleeve, while theouter portion of the spring fits upon the inner reduced portion of thebutton and the outer end of the springflts in the end of the spindle.

, The wide hooks of the sleeves are hooked into thebails or ears at themiddles of the inner edges of the hinge-leaves; and it will be seen thatwhen the leaves are swung at an angle the leaves will turnthe sleevesupon the spindle against the springs, which are held at the outer endsby the notches in the spindle, so that the tension of the springs willtend to close the leaves back into "their original position.-

After the leaves in opening have passed over the position in which theystand at right angles to each other, the spindle with the springs willbe forced out from a line with the pintles of the hinge-ears, and thetension of the spring drawing upon the bails or ears of the leaves willtend to draw the leaves to stand in a position parallel with eachother,so that after a door has been opened beyond a certain distance it willbe drawn open by the springs and held open by the springs.

It will be seen that the sleeves having the Lal hooks will be heldfirmly in place without any danger of their slipping off of the spindleby means of the studs upon the spindle, and the buttons at the ends ofthe spindle will be prevented from slipping off from the said ends bythe inwardly-bent ends of the springs, which secure them to the spindleby passing into the notches of the spindle, preventing the buttons fromcoming 0E in any other way than by sliding the entire spring off thespindle.

Having thus described our invention, we claim and desire to secure byLetters Patent of the United States 1. In a spring-hinge, thecombination of the spindle provided with a central flange and two studsat equal distances from the central flange, with the hook-bearingsleeves fitting upon the v spindle at both sides of the central flange,bearing with their outer ends against the studs and having longitudinalgrooves in their bores for sliding over the said studs, as and for thepurpose shown and set forth.

2. In a spring-hinge, the combination of the spindle formed withtransverse notches in its ends, the buttons fitting upon the ends of thespindle and having reduced inner ends, and having a notch in the outerfaces extending into the central bore, and the springs fitting upon thespindle and having their outer ends bent inward, and fitting in thenotches of the buttons and ends of the spindle, as and for the purposeshown and set forth.

3. Ina spring-hinge, the combination of a spindle having a centralflange and transverse notches in its, ends, and provided with studs atequal distances from the central flange,l1ookbearing sleeves fitting,upon the spindle and having flanges at their inner ends formed with anotch each in the outer faces and bearing with their outer ends againstthe studs upon the spindle, and having grooves in their bores forsliding over the studs, buttons having reduced inner portions andfitting upon the ends of the spindle, having each a notch in the outerface extending into the bore, and springs having their inner portionsfitting upon the sleeves, with the inner ends resting in the notches ofthe flanges of the sleeves,and having their outer portions fitting uponthe reduced inner portions of the buttons and their outer ends bentinward and placed into the notches of the buttons and ends of thespindle, as and for the purpose shown and set forth.

4. In a spring-hinge, the combination of hinge-leaves havingoutwardly'proj ecting ears at their inner'ends, pivoted together andprovided with perforated ears or bails upon the middles of their inneredges, a spindle, sleeves turning upon the center of the spindle andhaving wide hooks projecting from them engaging the ears or bails uponthe inner edges of the leaves, and springs coiled around the ends of thespindle and secured to the sleeves and to the outer ends of the spindle,as and for the purpose shown and set forth.

5. In a spring-hinge, the combination of two hinge-leaves havingobliquely-projecting ears pivoted together by pintles, and havingperforated ears or bails at the middles of their inner edges, a spindlehaving a central flange, and having notches in its ends and studs atequal distances from the flange, sleeves having longitudinal grooves intheir bores for sliding over the studs of the spindle, and bearing withtheir outer ends against the studs, and having flanges at their innerends provided with notches in the outer faces and hooks for engaging thebails of the leaves, buttons fitting on the ends of the spindle havingnotches in their outer flanged faces extending into the central bores,and springs fitting upon the sleeves, with their inner portions havingtheir inner ends engaging the notches in the flanges, and having theirouter portions fitting upon the reduced portions of the buttons, andhaving their outer ends inserted through the notches of the buttons andof the ends of the spindle, as and for the purpose shown and set forth.

In testimony that we claim the foregoing as our own we have hereuntoaffixed our signatures in presence of two witnesses.

HENRY I. KOCHSMEIER. GEORGE M. VALDORF.

\Vitn esses:

GEORGE SHovER, CALVIN KISTNER.

